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Service dogs may change physiology of stress in veterans with PTSD

Veterans with post-traumatic stress disorder who have a service dog may have lower levels of the stress hormone cortisol than veterans waiting to get a service dog, according to a study published in Psychoneuroendocrinology. The veterans who had a service dog had cortisol production patterns similar to those in healthy people, had less anger and anxiety, and slept better than their peers on the waitlist, the researchers said.

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